Table 4.
Agreement between standing, sitting, and lying measured by direct observations and by ActivPAL3™ and SENS motion® used as both single- and dual-sensor systems.
| Standing | Lying | Sitting | |||
|---|---|---|---|---|---|
| Assessment method | Standing N = 35 |
Supine N = 35 |
Flexed hips & knees N = 35 |
On bed/chair N = 35 |
In bed, backrest elevated 60° N = 35 |
| Direct observation (sec) | 2215 | 2281 | 2249 | 4774 | 2281 |
| ActivPAL, single sensor (sec) | 1507 | 2137 | 2184 | ||
| SENS, single sensor (sec) | 1396 | 2339 | 2161 | ||
| ActivPAL, dual sensor (sec) | 1505 | 1665 | 2118 | 3401 | 1580 |
| SENS, dual sensor (sec) | 1396 | 1808 | 2144 | 3740 | 1478 |
| Percentage agreement between direct observation and ActivPAL/SENS | |||||
| ActivPAL (single sensor), median % (IQR) | 73.5 (47.8-90.6) | 98.4 (89.6-100) | 100 (95.2-100) | ||
| SENS (single sensor), median % (IQR) | 67.7 (43.4-85.9) | 99.2 (94.5-100) | 99.2 (94.5-100) | ||
| ActivPAL (dual sensor), median % (IQR) | 71.4 (47.6-95.2) | 78.1 (50.0-98.4) | 100 (93.8-100) | 79.5 (60.9-90.2) | 92.3 (46.9-100) |
| SENS (dual sensor), median % (IQR) | 67.7 (43.4-85.9) | 93.1 (55.9-99.2) | 99.2 (94.5-100) | 84.6 (69.2-96.0) | 76.4 (38.9-93.2) |
ActivPAL: ActivPAL3™ monitor; SENS: SENS motion®.